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A rational method for the design of sand dike/dune systems at sheltered sites; Wadden Sea coast of Texel, The Netherlands
Perk, L.; van Rijn, L.; Koudstaal, K.; Fordeyn, J. (2019). A rational method for the design of sand dike/dune systems at sheltered sites; Wadden Sea coast of Texel, The Netherlands. J. Mar. Sci. Eng. 7(9): 324. https://dx.doi.org/10.3390/jmse7090324
In: Journal of Marine Science and Engineering. MDPI: Basel. ISSN 2077-1312; e-ISSN 2077-1312, meer
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| Author keywords |
innovative design method for sand dikes/dunes; sandy reinforcementcoastal defense at sheltered sites; coastal dune at sheltered site;building with nature |
| Auteurs | | Top |
- Perk, L.
- van Rijn, L.
- Koudstaal, K.
- Fordeyn, J., meer
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| Abstract |
A rational method for the design of sand dike/dune systems at sheltered sites is presented, focussing on the cross-shore dimensions of the sand dike in relation to the local wave climate, tidal regime and available sandy materials. The example case is the new sand dike/dune system along the south-east coast of Texel, The Netherlands. The old dike protecting the island was not sufficiently strong to withstand an extreme storm event and has been strengthened by a new sand dune/dike. Various empirical and numerical models have been used, compared and validated to determine the erosion volumes during annual conditions and extreme storm events. Potential wind-induced (aeolian) sediment transport and erosion is also studied using the modified Bagnold-equation including the effects of grain size, moisture content and vegetation. The overall design method resulted into an innovative design solution, guarantying a naturally integrated and resilient sand protection as well as optimal coastal safety. |
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